Nikon 10-24mm f/3.5-4.5G ED AF-S DX Nikkor Lens for Nikon Digital SLR Cameras. AF-S DX Zoom-Nikkon 10-24mm f/3.5-4.5G ED lens * 15-36mm effective focal length with APS-C sensor cameras * ideal for wide-angle shots of landscapes and scenery * lens construction: 14 elements in 9 groups * contains two ED (extra-low dispersion) lens elements for high resolution and contrast *Nikon 10-24mm f/3.5-4.5G ED AF-S DX Nikkor Lens for Nikon Digital SLR Cameras.